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| author | Arnd Bergmann <arnd@arndb.de> | 2023-08-03 10:26:15 +0200 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2023-08-03 12:08:35 +0200 |
| commit | 65412c8d72741cc6e6b082b478b8957d7e7c0480 (patch) | |
| tree | 8a3ad6707799ee8112c11919cf54aec241c4528c | |
| parent | 22dc02f81cddd19528fc1d4fbd7404defbf736c5 (diff) | |
| download | linux-stable-65412c8d72741cc6e6b082b478b8957d7e7c0480.tar.gz linux-stable-65412c8d72741cc6e6b082b478b8957d7e7c0480.tar.bz2 linux-stable-65412c8d72741cc6e6b082b478b8957d7e7c0480.zip | |
x86/asm: Avoid unneeded __div64_32 function definition
The __div64_32() function is provided for 32-bit architectures that
don't have a custom do_div() implementation. x86_32 has one, and
does not use the header file that declares the function prototype,
so the definition causes a W=1 warning:
lib/math/div64.c:31:32: error: no previous prototype for '__div64_32' [-Werror=missing-prototypes]
Define an empty macro to prevent the function definition from getting
built, which avoids the warning and saves a little .text space.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20230803082619.1369127-4-arnd@kernel.org
| -rw-r--r-- | arch/x86/include/asm/div64.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/include/asm/div64.h b/arch/x86/include/asm/div64.h index b8f1dc0761e4..9931e4c7d73f 100644 --- a/arch/x86/include/asm/div64.h +++ b/arch/x86/include/asm/div64.h @@ -71,6 +71,12 @@ static inline u64 mul_u32_u32(u32 a, u32 b) } #define mul_u32_u32 mul_u32_u32 +/* + * __div64_32() is never called on x86, so prevent the + * generic definition from getting built. + */ +#define __div64_32 + #else # include <asm-generic/div64.h> |